williamson



1, 1959 H. J. WILLIAMSON SPRAY NOZZLE ASSEMBLY 2 Shets-Sheet 1 Filed May 8, 1957 ill). 14.1

' INVENTOR HE/PaE/Pr (T 44/4 /1160 ///.$'ATTORNEY 11, 1959 H. J. WILLIAMSON 2,899,138

SPRAY NOZZLE ASSEMBLY Filed May a, 1957 W5 ATTORNEY 2 Sheets-Sheet 2 United States Patent SPRAY NOZZLE ASSEMBLY Herbert J. Williamson, Burlingame, Calif.

Application May 8, 1957, Serial No. 657,869 4 Claims. 01. 239-77 This invention relates to a spray nozzle assembly, and has for one of its objects the production of a simple and efficient nozzle for discharging fogged streams of liquid from atomizing or fogging types of spray heads, and intercepting these fogged liquid streams by relatively straight jetted streams of liquid to produce a far-reaching effect upon the fogged streams of liquid.

A further object of this invention is the production of a simple and efficient mounting for the spray nozzle assembly for detachably and rotatably securing the spray nozzle assembly upon a supporting tank, in a manner to eliminate protruding elements beyond the area of the supporting tank, so as to protect the fogging nozzles, pipes and the like, from injury and the danger of throwing these vulnerable elements out of alignment which would result from the striking of these elements by tree limbs and other obstructions.

Other objects and advantages of the present invention Figure 3 is a rear elevational view of the spray nozzle in association with a specially designed air funnel;

Figure 4 is a perspective view of the air funnel;

Figure 5 is a central vertical sectional view of the air funnel, the nozzle, with a portion of the supporting tank in elevation;

Figure 6 is an 'elevational view of the air nozzle in association with-the air tunnel, looking at the reverse side fromthat shown in Figure 3;

Figure 7 is a side elevational view of the spray nozzle;

Figure 8 is a horizontal sectional view taken on line 8-8 of Figure 6;

Figure 9 is a horizontal sectional view taken on line 9--9 of Figure 5.

By referring to the drawings in detail, it will be seen that 10 designates the mobile vehicle which preferably comprises a tank 11 mounted upon wheels 12 to facilitate transportation of the apparatus. A suitable pressure gauge 13 is carried by the tank, and a control valve 14 is also carried by the tank 11, preferably near the top thereof, as is shown in Figure 1. A remote control actuating means 15 preferably actuates the valve 14 and may be actuated by an operator.

A spray element 16 is carried at the rear end of the tank 11, and preferably defines a fan-shaped frame formed of hollow pipe or tubing. The spray element comprises an upper arched shaped tube 17 having depending converging side tubes 18 and 19. A clean-out cap 20 normally closes the lower end of the side tube 18, and a flexible tube or hose 21 is connected to the lower end of the side tube 19. This side tube 19 is also connected at its opposite end to the control valve 14 to supply pres- Patented Aug. 11, 1959 sure to the spray element. Rearwardly off-set fogging nozzles 22 are carried in spaced relation upon the upper arched-shaped tube 17 and have their upper discharge ends facing upwardly, as shown. A rearwardly ofi-set spray jet tube 23 spans the distance between the lower ends of the side tubes 18 and 19' and carries a plurality of jet nozzles 24 arranged in lateral spaced relation with respect to each other and in staggered relation with re' spect to the upper fogging nozzles 22. The jet nozzles 24 are spaced for a considerable distance below the fogging nozzles. The fogging nozzles 22 discharge fanshaped streams of fog in the manner shown in Figure 1, when fluid under pressure passes through the spray element 16. At the same time jet streams of fluid are discharged upwardly from the lower jets 24, and bet-ween the fogging nozzles 22. The jet streams from the jets 24 intercept the fog discharged from the fogging nozzles 22 in the manner shown in Figure l to define a far-reaching agitated fog mass projected in a selected direction, and in a bank throughout the width of the spray element 16 in a substantially vertical plane in an upwardly and outwardly direction. Fluid under pressure by being simultaneously discharged from the nozzles 22 and the jets 24 produces a mixing effect.

A transverse hub bracket 25 is carried by the spray element 16, and the ends of the bracket 25 are preferably connected to the respective side tubes 18 and 19. A journal bolt 26 constitutes a horizontal axis to connect the spray element 16 through the medium of the bracket 25 to the tank 11. This bolt 26 is adapted to be adjusted to hold the spray element 16 in a selected adjusted position to discharge afog spray in a selected and desired direction. It will be noted, by considering Figure 1, that the entire spray element 16 is contained within the area of the rear end of the mobile vehicle, thereby shielding the fogging nozzles, pipes, and the like, of the spray element 16 from injury and the danger of throwing these vulnerable portions out of alignment, which would result from the striking of these portions by tree limbs and other obstructions.

The mounting structure above described, eliminates an expensive rotary water-tight joint in a supply line or pipe, and permits'the use of a flexible hose. The mounting of the spray element 16 upon the bolt 26 permits the whole nozzle assembly-to be rotated from a centrally located horizontal axis. Furthermore, the mounting of the whole nozzle assembly, as shown, protects the struc ture at all times against injury from passing objects, and provides a compact structure'of simple design which is easy to install and which may be produced economically. The placing of the jet nozzles 22 below the fogging nozzles 24 for a considerable distance, within a comparative area, produces greater air turbulence and force to carry the fogged liquid outwardly, than might otherwise be produced.

As is shown in Figures 3 to 6, and Figures 8 and 9, an air funnel 27 may be used with the spray element 16 The element 16 is of a similar construction to the spray element 16. In this form of the invention, the air funnel 27 comprises a hollow cone-shaped base 28, which is provided with a plurality of upwardly extending hollow tubes 29. These tubes 29 are secured to the hollow funnel or cone-shaped base and flare outwardly toward their upper ends in fan-shaped spaced relation. The upper ends of the tubes 29 extend between the rearwardly off-set fogging nozzles 30 which are carried by the upper arched-shaped tube 31 of the spray element 16*, as is shown in Figures 3 and 6. The discharge outer ends of the tubes 29 are in substantial transverse alignment with the discharge outer ends of the fogging nozzles 30. The rearwardly off-set spray jet tube 31 of the spray element 16 extends through the transverse notch 32 in one side of the air funnel 27 near the junction of the tubes 29 with the base 28. A protruding abutment bar 33 is carried just above the notch 32 and terminates short of the ends of the notch 32. The side tubes 34 and 35 abut against the ends of thebar 33 to hold the funnel 27 against lateral swing relative to the spraying element. The side tube 35 carries a clean-out plug 36 at its lower end and the side tube 34 is secured at its lower end to a flexible hose or tube 37 which leads to a supply tank 11 similar to the supply tank 11, shown in Figure 1. Each tube 29 carries a book 38 near its upper end to overhang the upper arched-shaped tube 31 of the spray element 16, thereby anchoring the upper ends of the tubes 29 firmly in position between the fogging nozzles 30. The spray element 16 is mounted upon the tank 11 by means of a horizontal journal bolt 39 which engages a hub bracket 40 similar to the horizontal journal bolt 26 shown in Figure l, to facilitate rotatable positionable adjustment of the spray element 16 upon the tank 11*. The entire spray nozzle assembly is mounted within the transverse area of the mobile support in a manner similar to that shown in Figure 1. As is shown in Figure 5, the cone-shaped base 28 abuts against the tank or support 11 to brace the base 28 when it is mounted in position.

The above-described air funnel 27 creates a very efiicient venturi since the jet streams from the jets 24 are carried through the tubes 29 and discharged at the outer ends of the tubes intermediate the fogging nozzles 22 and in substantially transverse alignment therewith so that the streams from the fogging nozzles 22 and the jets 24 commingle in close proximity to the discharge openings. This funnel 27 produces a controlled air force or draft to join the jetted stream of liquid to forcefully carry the combined fogged liquid from the nozzles out wardly. Any suitable fogging nozzles may be used for the nozzles 22 within the scope of the invention. The funnel or diverging base 28 provides a relatively wide air entrance opening at the lower end of the funnel 27 to facilitate an up-draft through the tubes 29. The funnel is detachable for easy removal and placement to suit the desire of the operator and to accomplish the best results.

It should be noted that the spray nozzle assembly, because of the structure herein described will discharge a substantially vertical continuous bank of fog mass from the nozzles and jets throughout the length of the upper tube 17 in an upwardly and outwardly direction.

It should be understood that certain detail changes in the mechanical structure may be made without departing from the spirit of the invention, so long as such changes fall within the scope of the appended claims.

Having described the invention, what is claimed as new is;

1. A device of the class described comprising a support, a spray element mounted for vertical rotation on a substantially horizontal axis upon said support, said spray element defining a substantially fan-shaped frame mounted exteriorly of said support and movable within the exterior area of said support to shield the frame when rotated upon said support, said frame comprising an upper arched-shaped tube having depending converging side tubes suspending a spray jet tube below said upper arched-shaped tube, a hub bracket connecting said side tubes and engaging said horizontal axis, said tubes having discharge nozzles arranged for a mixing discharge of fluid passing through said tubes, said support including a tank containing a spraying fluid, and flexible means connecting said tank to said spray element for supplying fluid to said spray element.

2. In combination with a substantially fan-shaped spray element having an upper series of radiating fogging nozzles and a lower series of radiating jets; and an air funnel; said fogging nozzles being carried by an arched-shaped tube, and said jets being carried by a spray jet tube located below said arched-shaped tube, said air funnel comprising a hollow base having a plurality of upwardly extending hollow tubes, said base having a transverse notch for receiving said spray jet tube, said upwardly extending hollow tubes of said air funnel having their upper discharge ends fitting between said fogging nozzles of said arched-shaped tube, and hooks carried by said upwardly extending hollow tubes overhanging said arched-shaped tube for anchoring the upper ends of said upwardly extending hollow tubes upon said arched-shaped tube to firmly support said air funnel upon said spray element, said notch receiving said spray jet tube to anchor said hollow base in position, and said hooks engaging said arched-shaped tube to anchor the upper einds of said upwardly extending hollow tubes of said funnel in position.

3. The structure as defined in claim 2, wherein said hollow base is diverging and abuts against said support to brace the base.

4. The structure as defined in claim 2, wherein said spray element is provided with side tubes, and a protruding bar is carried by said base above said notch and terminates short of the ends of said notch, and the ends of said bar abut said side tubes to hold said funnel against lateral movement relative to said spray element.

References Cited in the file of this patent UNITED STATES PATENTS 2,561,432 Trantor July 24, 1951 2,754,151 Williamson July 10, 1956 

